Answered by Shaykh Faraz Rabbani
Does smoking require wudu?
Walaikum assalam wa rahmatullah,
Smoking is either blameworthy or prohibited. (For details: Search for smoking’ at www.sunnipath.com)
However, it does not affect the validity of one’s wudu: only the matters stated in the attached answer do.
Wudu: How is it invalidated?