The Smells of We're Alive are quite interesting. We have the biter stench. It is described several times. However, smell also comes into play at other times. Most notably, Lizzy's Puke. Tardust and Bricks are really bothered by it, Lizzy does not reference the sent, nor does Scratch. At the Arena Saul says someone lost their lunch. I got the impression it was visual, not OMG that stinks.

Saul comments that Angel smells worse than normal. Was that at the party? Was it booze breath? Something more. Later Burt says Angel is puking in the bathroom.

When they arrive at Irwin, Puck says nothing sarge, except you all smell like shit. Not really enough water to bathe, so probably just BO. But, the term was shit. Good general slang or something more? Later, when Puck gets to the Colony at the end of season 3, puck says something like where's the love, you all stink anyway. Again, just general slang?