As Sutherland explained:
"I had come from a different kind of tradition. I didn't even know what smoking dope was."I literally didn't know what the smell was. I thought it was smoke effects for the movie!
More at Contact Music.
Donald Sutherland was not a 60s man
Bet you didn't know Sutherland and director Robert Altman clashed on the set of MASH, mostly about drugs.