I think, use of formaldehyde in open area as you said in hospital it will be hazardous. even those procedures utilizes formaldehyde for sanitization or reducing the microbial load (such as in pharmaceutical industries) they were perform activity in closed rooms.
so its not good idea to use formaldehyde in open areas where man movement is too frequent.
Formaldehaye can not use in hospital because is adanger gas,
Formaldehyde is the simplest group aldehydes .Formaldehyde have the following characteristics: -
1. colorless.
2. flammable.
3. a pungent odor.
4. Fast soluble in water
5. boils at a temperature of -21 ° C.
When mixed with formaldehyde vapor with hydrogen chloride vapor, producing them bi-chromethyl ether , Who discovered its relation to the high number of cases of lung cancer among workers in chemical plants, as well as his relationship with malignant tumors that infect the respiratory tract