What method is rhinitis often effective? Someone recommended Fendoterpenoids from Benyuanfang. What's the effect?

Try this method. Wash fresh raw onions, mash them, soak them in onion juice with small cotton balls, first wipe your nostrils with cotton swabs dipped in light salt water, then put the cotton balls dipped in onion juice into your nostrils, breathe gently for a few minutes, take them out after the irritation disappears, and then replace them with new cotton balls, once a day, 5-6 cotton balls each time. Rhinitis will recover soon.