My place of residence is surrounded by polluted air, so I often have a stuffy nose and itchy eyes, even when wearing a mask. I also suffer from rhinitis. After wearing the Airvida, these problems really improved! Also, I have to work in an operating room for long periods of time, so it’s very important to avoid the smoke from electrocoagulation (a lung cancer carcinogen). Therefore, I think wearing the Airvida to protect myself during working hours is essential.