My great personal adventure was a two man hunt.
We were hunting from a tent.
I phoned him two days before the hunt and told him I was dying, had the flue really bad, couldn't even breath well. He says lets go anyway, I never get sick, I'm on too many meds.
He was right, he didn't get sick, however, being sick with the flue in a cold tent, and eating outdoors under a tarp in the rain isn't fun at all. I learned to love Buckley's mixture, it kept my head clear, I was drinking from the bottle, too hell with the directions. I also drank my share of the water we had, and we went out and got some from a local well. There are a few pools of barf feeding the trees up there, probably still smells of Buckleys and that was near thirty years ago.
By about Thursday, I was feeling well enough to cancel my grave opening. Damn it was a bad few days. But, I did shoot a yearling black bear that hunt, even though we didn't see any moose.
If I were sick like that, I will always tell the guys, and back out. No way will I bring that or even a cold to camp. I'm a very dedicated hunter, it would really bother me to stay home, but I value my friends health more.