You may not have a abnormal body odor at all.
The problem may be with the complainer.
They may have a disorder like multiple chemical sensitivity.
.en.wikipedia.org...
Or phantosmia.
www.mayoclinic.com...
There are a number of causes for Altered Perceptions of Smell
It can be something that many bosses don't know how to handle.
or even tell who really has the problem.
You might ask your boss if the complainer is pregnant.
Many pregnant women report an altered sensitivity to smell.
Once pleasant scents suddenly seem unpleasant (like men)
Always deny and tell your boss no one else seems to smell anything.
And if you get fired they would have a extremely hard case to prove its you and not a problem with the complainer.

