This is a serious issue for me as well I've asked co workers I'm fairly close with and they say they don't notice me etc. I can't tell if they're just trying to

This is a serious issue for me as well I've asked co workers I'm fairly close with and they say they don't notice me etc. I can't tell if they're just trying to be nice though, I think I'm a loud breather but I don't know how to prove it.