Can you develop asthma from being around second hand smoke when you were growing up?

Not always: Asthma develops due to multiple factors ad there is not a single cause. Smoke irritates the airways and produce inflammation, reducing their size. Whether this inflammation heals or is persistent, and if other factors such as allergies are present determine if an individual ultimately develops asthma.

Can trigger event: Asthma is a geneticly influenced condition marked by increased airway reactivity, mucous production and swelling.The worst cases seem to emerge in childhood but can come later. Smoke from any source, chemical fumes, cold air, infection & other triggers can set off an attack but are not the originating cause of asthma.The presence of any trigger can make control difficult.

Can trigger event: The experience of second hand smoke can make asthma worse, and perhaps make a very mild tendency toward spasm of airway muscles bad enough to be noticed and diagnosed as asthma. There is no proof that exposure causes the diagnosis later on in life, but it also doesn't help, it is not a neutral event.

Yes: Children exposed to second hand smoke, and other forms of pollution have a higher risk of developing respiratory diseases including asthma.