Hi again and thanks for all your help.
I have spoken with him once more about it. He has a bad memory (always has and I often have to remember some things for him) and I asked him if he remembered what I said about how I feel when I see him do it. He told me he only remembered I did not like it and asked if there was more for me to remind him, which I did and told him about how each time my feelings grow stronger and that I am seriously afraid of becoming unattracted to him. He was very concerned (much more so than previous times) and upset. He told me he has been trying hard and brought up an issue with his nose. He has told me about this issue before, but never explained how it was connected to this problem.
His bone at the top of his nose is asymmetrical and I believe this is what causes the issue. One of his nostrils or both of them are always blocked (not with snot, but bogies). I have read about people who also eat from their nose having operations that stopped their noses from being blocked so much, but he does not want an operation (definitely couldn't afford it now anyway and I've read how painful it is recovering from such a surgery).
He told me how he used to carry around tissues all the time, but his nose was blocked so much that he always ran out. He was constantly buying tissues and running out of them. So he ended up eating it all instead because he didn't have to pay and he would never run out of a way to dispose of them... He never does it in front of anyone else, so I am guessing he also finds it gross himself, but feels like he has no other option and does it purely for convenience and from irritation of not being able to breathe properly. He has also done it for so long that it has become a habit.
I suggested a handkerchief, but he said he would feel like an old man. I also suggested vapours that clear your nose, but he has tried those with results only lasting mere seconds. He told me he would try using tissues again (you can buy millions of tissues for a very cheap price at a nearby mall). I also explained to him another thing (apart from hygiene) which makes me feel so repulsed by this. I knew a boy in primary school who also ate his bogies. He would make a big show of it, really digging around in his nose, sticking his tongue out and wiping the bogey onto his tongue so everyone could see. Next he would run around wiggling his tongue and the bogey in everybody's face... x_x My husband was also disgusted by the story. He thanked me for telling him though and asked me also to try and deal with my feelings towards this event in the past so we can meet halfway.
I have agreed to do so, but was wondering if anyone else knew of any solutions to his nose being blocked? If he can get rid of the blockage he will not have to put up with having to breathe through his mouth or eating the blockages.