Assassins.
Horrible smells could end up on the bad end for us. I'm not entirely sure having someone retch on me in order to kill them is all that sporting.
Mr. Auditore and I are both scouts, and Jacob a Map Maker, so we have freedom to leave at any time, if we wish. We should be able to gather supplies for you easily enough, if it's something that can be gathered.
As for bombs... well. Some time ago, I found myself as a teenager - she found herself here and sixteen. Alfred and I may have had a bit of fun with my supply, but we worked on recreating them with the parts. It's not exactly, but I'll happily hand over what we threw together.