Having lived in Japan for around 10 years, in my experience, the vast majority of mask wearers are doing so because of allergies (particularly Sugi). It's prett

Having lived in Japan for around 10 years, in my experience, the vast majority of mask wearers are doing so because of allergies (particularly Sugi). It's pretty rough for a lot of people - particularly in the early spring months. Also why air purifiers are big business here.