Yesterday, I went to Mianshan in Jiexiu to burn incense and worship Buddha. The tour guide reminded me not to blow incense with my mouth, which is bad for my health? What's the history?

If you want to put out the lit flame, don't blow it with your mouth, but shake it in the air a few times and the flame will naturally go out; When worshipping Buddha, don't pat off the incense ashes kneeling on your pants, just wipe them off gently with a handkerchief or paper towel. Because blowing incense with your mouth and patting incense ashes are disrespectful behaviors to Buddha.