I am really sorry but I don't know
un smoking
I am still smoking --> Je fume encore
quit smoking = arrêter de fumer
health = santé
"Pas mal" is how you say "not bad" in French.
Any amount of smoking is harmful to your health. Ten cigarettes a day is most likely not as harmful as smoking, say, a pack a day. But it's still FAR worse than not smoking at all. Furthermore, since there have been few studies when it comes to light smoking, it is difficult to say how the dangers of smoking, say, 10 cigarettes a day compares to smoking a pack a day.
Some people say smoking should be banned because it is a serious threat to human health.
bad - mauvais
smoking weed is bad in general, but yes, i wold say that smoking weed during a pregnancy should be highly avoided as it probably harms the baby.
Santé
Smoking causes heart disease and increases your chance of heart failure vastly. If your heart is already in bad shape which it is if you need a mitral valve replacement which is on the left side of the heart. Then I would say that you are only damaging the heart even more if it is in bad shape as is.
Mauvais.