Hello Mom
I would NEVER spray a pastel or a Giclee without permission!!!
In fact, pastels or Giclee, if placed under glass do not need protection, except maybe from irresponsible framers.
But, since I was the one who helped print and proof the Giclees with the artist and the publisher, we had an opportunity to experiment with different coatings. I did some research, and it turns out there is no single solution.
Now, if we are to stretch a canvas like a painting, it would be much more irresponsible not to protect it with an appropriate coating, or make sure the artist or publisher has done so. The moisture of you fingers alone will damage a print.
Oh, yeah, the lacquer vapors are bad, but it is quick and easy and sprayed outside.
I will be buying a different coating. I believe many printers are using the u.v. protective gel coat used for brush-stroking.
The u.v. protective lacquer I currently use is designed for spraying on photographs.
It is also great for covering up water stains on photos.