Hydrofluoric (HF) acid, one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). Hydrofluoric acid also may be found in home rust removers. Exposure usually is unintentional and often is due to inadequate use of protective measures.
It can be difficult to pinpoint the exact cause of a burning smell in nose. Thatâs because the potential causes are many. One possible explanation for this symptom is sinus congestion. A lot of people suffer from this, so you shouldnât rule it out. People with sinus problems sometimes smell things that arenât there, too.
I have been having this very FOUL odor coming from my nose , throat and mouth. This has been going on for more than 2 months maybe more than 6. It's as if I have bad breath when I don't. The smell is for sure in my throat and nose. Even when my mouth is closed , people can smell my odor because it comes out of my nose.