Someone can correct me if I am wrong, but I believe Pliobond is
nitrile rubber, a phenolic resin and MEK as a minimum (although there
is also a PVC variant of the product).  I believe it is also listed
as a carcinogen and requires a respirator.

Wm. G. Chapman
West Point, New York

 [ At https://www2.itap.purdue.edu/msds/docs/1916.pdf is a Material
 [ Safety Data Sheet (MSDS) for Pliobond 20 adhesive which lists
 [ these chemicals: methyl ethyl ketone, nitrile rubber, alkylphenolic
 [ resin, calcium carbonate and formaldehyde.  The document notes that
 [ formaldehyde is "listed as a carcinogen" and says there should be
 [ adequate ventilation during use.  I didn't see respirator mentioned.
 [ -- Robbie