Swallowing/Regurgitating Cigarettes - Is This Possible?

[Jassassino]

Naomi tells Snake that he's been given medication to suppress his gastrointestinal juices--Effectively preventing the pack from being digested. It's well-known that cigarettes are not good for you if eaten, search engine results claim that vomiting and a possible fever is almost guaranteed.

The biggest piece to this puzzle is the item icon ingame:


Snake did not just swallow a handful of cigarettes--They are IN A PACK. So that prevents the stomach from absorbing chemicals from the cigarettes themselves, I guess (?).

I can believe that fat gob can guzzle an entire pack of Marlboro. What I can't believe is him actually smoking them.

Even if he isn't producing gastrointestinal juices, there must still be moisture in his stomach - after all, he can get a cold, so we know that at the very least, his throat and respiratory tract is lined with healthy mucus to start with. So how does he still manage to light these soggy cigarettes? Everytime he regurgitated one, does he pat it down, fan it out, draw out the moisture (somehow?) and then light them?