Q&A

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Question posted by Marcel aan de Brugh/NRC Handelsblad
Dear mister Callewaert, Herewith I'd like to ask you if I could ask you some questions on the phone, about your research on smelly sports clothes, and trying to wash off those smells, and why that doesn't work. I'm writing about this for the newspaper I work for, NRC Handelsblad. My colleague Marianne Heselmans interviewed you beginning of March last year. Hope to hear from you. With kind regards, Marcel aan de Brugh 06 - 29 58 55 34
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Question posted by Nicki
Just recently, maybe since last week, my left armpit smells rancid...while the right armpit has no odor at all. I've washed and scrubbed with antibacterial soap, but infinite showers could not rid me of this smell. It's not even the typical BO sweat smell...it smells...bitter and makes me nauseated. I've never smelled anything like it. It is not going away no matter how much deodorant I apply, I even tried not using deodorant at all. What gives ?
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Question posted by Janie
My left underarn has been smelling very bad like ive been working a jack hammer all day long in 100 degree weather
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Question posted by Sara
What is the name of the bacteria responsible for onion smell?
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Question posted by Robert
my right armpit smells completely normal, but my left almost smells like mold. it smells very bitter and moldy. I have tried switching from my natural deoderant back to old spice which I used to use and have zero problems and it went away from a little bit. Recently came back stronger then ever.
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Question posted by Kate Wills
Hi Dr Callewaert, I am a journalist writing a feature for Fabulous magazine about why it's important to wash your gym clothes after every workout. Could you email me some quotes on this? My email is katewillsfreelance@gmail.com Many thanks Kate
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Question posted by Name
In response to Minnie's question you said the following: "Indeed, my underarm microbiome changed to a dominance of corynebacteria. After three years, I was able to change it back to a dominance of non-odorous bacteria. This happened in summer, while painting and renovating the house, and by co-incidence. I was also working constantly with my arms, with one and the same painters T-shirt. After showering, I wore again the same unwashed painters T-shirt to proceed the 'dirty' work. This helped in taking over the shirt microbiome, from which afterwards we got to know mainly the 'good' bacteria grew in." I don't 100 percent understand and would like a little clarification. Why would it make a difference that you worked constantly with your arms? Did the good bacteria grow on the shirt and take over the bad ones on your skin?
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Question posted by Kim
My hubby has bad body odor. He could bath before bed, use deodorant and in the morning he will have bad odor under his arms. Also, he is allergic to aluminum chloride which is in a lot of deodorants. Help!!
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Question posted by Sara
I have one armpit that smells immediately after a shower. Any ideas why?
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Question posted by Christina
Can you put one deodorant on one arm pit and a different one on the other to see which one works better?
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Question posted by cimbo
I have been ill since 2011 with neurological condition....since then i have noticed my left arm pit stinks...even after washing. any ideas what this could be?.....
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Question posted by Minnie
Hello Dr. Armpit, I have really enjoyed the work you have done to promote your research through this site, it's nice to have direct access to a researcher who can communicate with people on their wavelength. I've noticed you have not been able to answer many questions in the past few months. While I do have a story, like many others, I am more curious to know about some particular questions. What are your thoughts on the research being done by AOBiome (www.motherdirt.com)? How would the Ammonia-Oxidizing Bacteria in the AO+ Mist product reduce odour (as reported by some users)? Does chlorophyll actually reduce body odour? What mechanisms are at play for this to occur? Has any research been done on anaerobic bacteria that cause body odour? I've noticed that some fabrics will smell just due to heat exposure, not necessarily humidity. Lastly, you've mentioned that you had a an experience that led to you starting your research. What solutions worked for you?
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Question posted by Kasandra
What is the best temporary solution for body odor?
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Question posted by dog
armpit and genital ordors
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Question posted by Cath
Hi, I recently stopped using antiperspirant. I found that as long as I wasked my armpits several times a day, there was no odor. However, the realities of a hot summer and busy workplace meant I had to find an alternative. I started using a natural magnesium deodorant. I now find the odor worse on days when I don't use it. I understand that magnesium is incredibly alkaline. Does this affect the microbiome?
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Question posted by JeffBob
I like to put chilli heatwave doritos in my armpit.It gets tangled in my hairs.
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Question posted by Karen
I recently switched my deodorant to using a natural deodorant crystal. First few months seemed ok minus having a smell by evening lol but recently I realized that the stink smell comes only from my right armpit while the left armpit has no smell at all. I've google it an someone said if your liver is working sluggish this would happen. Is this true?
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Question posted by Maryl
I have noticed that stressful situations cause my armpits to become smellier, but not necessarily sweatier. What effect does adrenaline and cortisol and similar hormones have on under-arm flora?
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Question posted by ?
If you have smelly armpits, should you continue to use antiperspirant even though it doesn't help? Or should you stop and instead use something else? What would you recommend?
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