 At the show jumping events of the 2008 Summer Olympics, four horses tested positive for the substance, which resulted in disqualification.Capsaicin is a strong irritant requiring proper protective goggles, respirators, and proper hazardous material-handling procedures.Capsaicin takes effect upon skin contact (irritant, sensitizer), eye contact (irritant), ingestion, and inhalation (lung irritant, lung sensitizer).