AIBU to be annoyed with DS2's Biology teacher?

[wigglybeezer]

I thought she seemed very nice at parent's night, not so sure now...
Trying to watch telly ( had saved up the last episode of Poldark) but DS2's noisy sniffing was distracting so I asked if he wanted a hanky and got the following reply: "no thanks, I don't need one, my Biology teacher says blowing your nose is bad for you, sniffing is healthier" !!!
Some twaddle about expelling mucus encouraging the nose to produce more followed.

Go see her and say that sounds fascinating, can she show you the research that proves that? I bet my snotty hankie she's not got any!

Thanks, that has just ruined my evening.

Memo to self, you do NOT have to google, repeat you do NOT have to google........

My ENT consultant said never to blow your nose when I was having my sinuses drained. It some mucus is forced back into the sinuses when you do. Medical advice is to sniff.

there is some evidence that blowing your nose hard can propel germs/virus into the sinus cavity and cause secondary infection... it can also cause pressure build up.

The advice is to blow one nostril at a time gently and take decongestants.. not to not blow at all.

Every day is a school day on MN!

I cannot stand the sound of sniffing though. It gives me the shivers.

Well I'm stuffed then I've got graves and decongestants are a no no plus I've weird set up where if I sniff too much my ears block up

I'm no expert but always thought the whole point of mucus was to wash the viruses out of your body, in which case surely sniffing defeats the point and you want more to be produced to get as many out as possible?
Maybe I'm completely wrong but sniffing gives me extremely blocked ears anyway.