What should I look for in a respirator for chemical processing of photographic materials?
I am already wearing eye and skin protection when using development chemicals.
I would like to avoid breathing in irritants and toxic chemicals.
The answers Google turns up are mostly forum threads dominated by "real men don’t use a respirator" type comments that don’t shine light on considerations regarding respirators themselves.
A person can use a respirator and ventilation. Indeed a person may need or want both. Needs might be due to allergy or heightened sensitivity. Needs might be based on using an alternative process such as collodion or daguerreotype.
A want might be to develop habits normalizing respirator use should future work involve more toxic chemicals. In other words to have a methodology that can maintain consistency in new situations.