2. You stink.
I know you can’t smell yourself (unless you’re pregnant or poo-covered) but trust me on this one. Wear deodorant. It won’t stop you from sweating but it does help with the stench. Do NOT under any circumstances substitute cologne or perfume for deodorant. It won’t mask the smell and it will make people (i.e. me) barf. Also, and this is more of a side note as there isn’t much you can do about it; if you eat strongly flavored foods – garlic and curry are the worst offenders – then you will “sweat it out” the next day. Personally, I don’t mind smelling other people’s faint food odors but some people are sensitive about it.