The San Francisco Board of Supervisors voted 10-1 Tuesday to ban smoking tobacco in the privacy of people’s apartments or condos, but made an exception for cannabis. The ordinance to protect residents from second hand smoke prohibits smoking inside buildings with three or more apartment units, including privately owned condominiums and in all common areas. But medical weed and “adult-use” weed are allowed. Violators could face a $1,000 fine. The board will hear a second reading next week, before the ordinance goes to Mayor London Breed for her signature. Once signed the law would go into effect 30 days later.