Various plastic fumes can cause occupational occupational asthma. Many other agents are also often present when manufacturing and using plastics. For example azodicarbonamide, a plastics blowing agent, is used during manufacture and isocyanates are often used when printing onto plastic.
The Oasys Audit scheme started midway through 2010 and collects agents typed in through the Oasys program. The years before 2010 show old data entered during 2010 or later and are likely to have many fewer notifications. We expect Oasys to become more widely adopted as time goes by so increasing notifications does not necessarily mean an increasing problem.