I always toke with a cold/flu and if you've got one of those tickly coughs, ya know when you take the smallest hit and it cripples your lungs and makes you cough like noob try this:

Inhale through a damp towl, yes it will filter some of the THC, but if ya that desperate for a toke while ill, this is a tried n tested method. Also works for shitty harsh weed.

Peace

Buddy