California Code, Health and Safety Code - HSC § 1530.7

(a) A licensed children's residential facility shall maintain a smoke-free environment in the facility.

(b) A person who is licensed, certified, or approved pursuant to this chapter to provide residential care in a foster family home, certified family home, or resource family home shall not smoke a tobacco product or permit any other person to smoke a tobacco product inside the home, and, when the child is present, on the outdoor grounds of the home.

(c) A person who is licensed, certified, or approved pursuant to this chapter to provide residential foster care shall not smoke a tobacco product in any motor vehicle that is regularly used to transport a child.

(d) For purposes of this section, “smoke” has the same meaning as in subdivision (c) of Section 22950.5 of the Business and Professions Code.

(e) For purposes of this section, “tobacco product” means a product or device as defined in subdivision (d) of Section 22950.5 of the Business and Professions Code.