バッタ臭い / Battakusai / Stinks of butter was a derogatory term for foreigners in the past. Butter was unpopular with locals in Japan for a long time by what I've

バッタ臭い / Battakusai / Stinks of butter was a derogatory term for foreigners in the past. Butter was unpopular with locals in Japan for a long time by what I've read, but I never thought the expression was being literal. Interesting.