If I smoked a few puffs of a cigarette will that have any noticeable impact on my laser scar treatment?

While it’s
true that you should avoid tobacco for the best laser scar treatment results, a
few puffs of a cigarette should not have any significant impact on your scars. Smoking
cigarettes dehydrates your skin and depletes some essential vitamins that
promote skin renewal and healing, so tobacco should be avoided regardless of
whether you are undergoing laser scar treatment. However, the amount that you
inhaled would have an insignificant effect, if any at all. Try avoiding tobacco
for the remainder of your healing process.

Cigarettes delay wound healing both with surgery and with lasers.  Smoking also increases fine lines and sun damage.  I don't know how many cigarettes affect this healing but I would definitely try to discontinue your smoking if possible.

Smoking definitely impacts the wound healing process. I am not aware of the specific amount of smoke/carcinogen that is needed to impair the healing process, thus I can only recommend complete avoidance of smoking and also 2nd hand smoke. Smoking also increases the rate of aging of the skin (creates fine lines, wrinkles, and thinning of the skin). I hope that you are able to kick the habit!!!