Canada Post workers placed in isolation after envelope leaks suspicious liquid

Eight workers employed at Canada Post’s distribution centre in north-end Montreal were placed in isolation early Friday when two of them apparently fell ill after handling an open envelope.
Montreal firefighters on the scene at 1:50 a.m. found the two persons suffering from headaches. They were treated by Urgences Santé paramedics but not sent to hospital.
The envelope in question was examined and a liquid was found to have leaked from it. However, a quick analysis of the substance