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.
Problems with the inner lining of your nose. Conditions that cause temporary irritation or congestion of the mucous membranes lining the inside of your nose are the most common cause of loss of smell. These may include: Acute sinusitis (sinus infection) Common cold. Hay fever (allergic rhinitis) Influenza (flu)