If you are just going about your gym session, or we are just chilling then no. If you are really upset or really happy key world being 'really' then yes I could tell. If it was a strong negative feeling I would feel a bit weird in my stomach and just shake it off. Its not like I'm am hearing your mental monologue. If it is a strong positive emotion I would ride that wave with you. You ever heard of gang mentality? If all these people are feeling the same strong emotion it effects you and makes you more susceptible to that feeling and giving into peer pressure per say.

If we are just on the chilling and you go have a shower even if I was making a conscious effort I wouldn't necessarily be feeling it. Like I said before senses detect change. If I walk into a room with you in it if you freak out from my precense let's say because you had some negative or positive alterior motive to me being there I would feel a bit suss. But if it's all chill and the feeling is constant then you went and had a shower then probably nothing. If you are worried that people can like feel you masterbating in the shower haha I wouldn't worry. Even if they do feel that change it would be a bit hard to connect those dots especially for most empaths. If you are still paranoid imagine a white shield cloaking you, like an egg almost. that would be enough I'd say to help stop things leaking out. I do this to stop feeling others when I'm in a crowd but it works both ways.