<unk>  or olfactory<unk>  is the act of regularly sniffing or exposing oneself to robust aromas with the intention of regaining a sense of<unk> . The stimulating<unk> s used are often selected from major<unk>  categories, such as aromatic, flowery, fruity, and resinous. Using strong scents, the patient is asked to sniff each different<unk>  for a minimum of 20 seconds, no less than two times per day, for three to six months or more. It is used as a rehabilitative therapy to help people who have anosmia or post-viral olfactory dysfunction, a symptom of COVID-19. It was considered a promising experimental treatment in a 2017 meta-analysis.
Smell training
Schimmelbusch mask
Voice prosthesis
Voice therapy
Mustard bath
Trauma-sensitive yoga
Toftness device
Air purifier