What is the diffrence b/w bad breath, BO and other smells?

bad breath
SNAKE GOMEZ asked:

So I was abuot to slow dance with a friend at this party, jsut a dance…we had all been drinking and then it kinda smelled like either a fart or a whiff of bad breath. I dont know. How can u tell? Oh yeah and when we hugged, her armpits smelled. How can I tell her in the future? thanks.

Bad breath Gone