contact high
slang (originally and chiefly US )
noun
A feeling of elation or intoxication influenced by the (especially drug-induced) behaviour or mood of another person; (also) an instance of intoxication caused by (inadvertent) inhalation of smoke from another person's marijuana cigarette, pipe, etc.
Origin
1950s; earliest use found in Jack Kerouac (1922–1969), novelist and poet (real name Jean-Louis Kerouac).