Is there something up with stinky inflatable pool toys?
(PHYSorg.com Chemistry)

Inflatable toys and swimming aids, like bathing rings and arm bands, often have a distinctive smell which could indicate that they contain a range of potentially hazardous substances. Some of these compounds, which include carbonyl compounds, cyclohexanone, phenol and isophorone, might be critical when present in higher concentrations in children`s toys, say Christoph Wiedmer and Andrea Buettner, who are authors of a study in the journal Analytical and Bioanalytical Chemistry..