Please read the following link:
Smoking bans 'cut heart attacks'
"If you are a smoker, the single biggest thing you can do to avoid a heart attack is to give up, which could also protect the heart health of friends and family."
In a nutshell:
"His team found that heart attack rates across Europe and North America started to drop immediately following implementation of anti-smoking laws, reaching 17% after one year, then continuing to decline over time, with a 36% drop three years after enacting the restrictions."
Isn't it time to ban smoking in all public places and that includes any place where the public is allowed to enter such as restaurants.