Arthur,
Platinum salts can do serious damage to your health. I've known people who have had to leave the precious metal refining industry because of the allergy. It is very serious. Always handle the salts with gloves while wearing a mask and do it in a hood.
This is quoted from Wickipedia;
Platinosis is an allergy-like reaction to exposure to soluble salts of platinum.
The symptoms of platinosis may include asthma, dermatitis, dyspnea, conjunctival vasodilatation, and rhinopharyngitis.
The symptoms are progressive, sometimes taking months to years to appear. Platinosis is usually associated with workers in industries related to platinum production. The effects are permanent.
Halogeno-platinum compounds are among the most potent respiratory and skin sensitisers known, therefore it is vital that exposure via the skin and by breathing contaminated air is carefully controlled.
In practice, the compounds mainly responsible for platinum sensitisation are typically the soluble, ionic, platinum-chloro compounds such as ammonium hexachloroplatinate and tetrachloroplatinate, and hexachloroplatinic acid
Arthur, if you are having symptoms, talk to your doctor. And be careful, we like having you here!