Which would you say is more irresponsible regarding health.
Smoking two packs a day, of something like Marlboro Edge, which is the modern version of the old Marlboro 'Reds'.
Or not being careful with this virus?
It's easily the latter. Smoking excessively might lead to early death, with a years to decades-long forecast depending upon your current health, but it won't kill anybody one or two weeks after starting to smoke; the virus is basically an extremely potent poison when looking strictly at its health effects, and can and has and is right now killing people who just encountered the thing last week.
Stay safe!
And take up smoking.