Netizen Inishya's answer is just the other side of the fragrance. Here I want to talk about my views based on my years of experience in the field of air purification.

First of all, what's your scent? Essential oils are not counted, one is all the incense that needs to be lit with fire, and the other is similar to air freshener.

The first one will have a problem. When it is ignited by fire, the floating smoke is actually inhalable particles. Pm2.5, which we often hear now, is one of them, and the harm of this substance is that it will deposit in our alveoli and hinder the work of alveoli, which will lead to problems in lung work and prone to respiratory and lung diseases.

Second, the artificial aroma of chemicals may have a soothing effect on people's nerves. But chemistry is chemistry, in which polycyclic aromatic hydrocarbons (PAHs) are carcinogens, which can cause chest tightness, nausea, dizziness and head swelling. Aromatic hydrocarbons in polycyclic aromatic hydrocarbons are the most commonly used air fresheners.

What other fragrances are there? I don't know, I need other big answers!