Any way to take poppers (isobutyl nitrate) without inhaling them? (Been giving me a chesty cough)?

I love poppers. I'm a bit addicted to them (not for sex, but just to get the high). I've been rolling cigarettes from tissue paper and dipping them in poppers and sucking on the end to get high. Been doing it for a while. However when I do it I have a bad chest for up to a week afterwards. Like a tight chest and then it turns into a mucous cough. I do not want to stop taking poppers, but obviously will have to if it keeps affecting my chest.

What would happen if you used a tampon and took the poppers per rectum (in like an enema) (I mean if you dipped the tampon in the bottle and then put it inside your anus? I have never heard of anyone doing this. (Obviously just trying a tiny bit first and then if my body does not go banannas, a bit more). Has anyone done this?