Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 2 years ago

Being in company with sinners harms a lot as being in company with pious person helps a lot. Smoking Haraam substance is forbidden in Islam, hence, you should not be in the company of such person unless you can influence him to leave sinful acts, and make him away from sinful acts.