Did the wire come with a MSDS, Material Safety Data Sheet?

Could always contact Welding Alloys (USA) directly and ask them.

Tel +1 859 525 0165
Fax +1 859 525 9094  or,

submit an online inquiry:  This link is for asking questions about their flux cored wires.

http://www.welding-alloys.com/usa/wirecontact.html

Looking at the wire description,  http://www.welding-alloys.com/usa/assembhet.html

I would say it is carcinogenic.  Not only because of the flux core smoke plume but, that it is a stainless consumable.  OSHA has also changed the exposure limits to hexavalent chromium.  A concern, when one performs mostly stainless welding, for extended periods of time.

To answer your question:  I never used that particular wire but, have used other manufacturers wires.