Therefore, proponents say, smoking bans exist to protect breathing people from the effects of second-hand smoke, which include an increased risk of heart disease, cancer, emphysema, and other diseases.
In general however, extended bans were only assessed for red cards given for serious foul play, violent conduct, spitting or perhaps foul and abusive language.
While we should not institute indiscriminate bans on chemicals, neither should we expose the next generation to likely brain drainers while we wait for significant damage to be documented.