Many many psychologists and relationship counsellors will tell you that housework - and in particular leaving your shit around for someone else to clear up after you - can kill relationships if it's not negotiated properly.
Picking up someone's used underpants and wet towels makes you feel like a maid. It does not make you think phwoar I want to jump their bones.
My golden rule is that in a balanced relationship both people's lives should be easier than if they lived separately. DH and I both work full time and earn the same. Housework is split 50/50. We each do our own laundry and packed lunches. Vacuuming, dishwasher etc is split between us all (DC included) equally. I have a very very very reduced tolerance for this slipping and being made to do more than my share. I have a DH who isn't too good at putting things away. It's his home too so I usually leave it 24-48 hours but after that I've been known to deposit it on his bed or in the bin because it was in my way. He doesn't do it so much anymore.
Anyone who thinks housework is too trivial to split up over has seriously missed the point that it's just a gauge for the balance of responsibilities and respect in your relationship. If it's unbalanced, it definitely IS worth leaving over if it can't be fixed.
The farting thing is a bit more personal. We all do it and some people don't mind or even find it funny. Personally, I'd again find it a bit of a passion killer. DH and I have occasionally let one off accidentally and might laugh about it but we both avoid it. Shitting, farting, scratching your genitals, phlegming - most people don't indulge in these in the early stages of a relationship for good reason. As a relationship develops that might change as you have other binds, but they are not known for increasing passion!
I think you need to spell it out OP. If he chooses to do nothing, that's an answer of sorts.