Do you accept the invitation of a smoker? And is it permissible for a smoker to lead people in prayer?

It has been previously explained that smoking is forbidden due to its harms, and that it is impermissible for a smoker to lead prayers, although the prayer behind him is valid if he does pray. Similarly, there is no impediment to a smoker's supplication being answered if the conditions for acceptance are met and there are no hindrances.