If Einstein was so smart why did he smoke tobacco?

He liked it? Pretty basic concept.

If dolphins are so smart why do they get caught in tuna nets?

Smoking is unrelated to mathematics.

he also loved psychedelics i heard

He was smart when it came to theoretical Math...He had no idea the carcinogenic effects of tobacco were evident. That knowledge post dated him

There isn't really any correlation between intelligence and bad habits or addiction.

Quote Einstein : quitting smoking is easy , I Know as I've done it thousands of times .

Tobacco was also different back then. No added chemicals.

Stress kills - not tobacco