TODO— are either "water-based" or "non flammable" basically equivalent to "no VOC"?)). However, there are mixed reports about how good they are — some people believe no-VOC versions definitely don't work nearly as well as the traditional versions, while other people insist they work just as well. You'll have to decide that for yourself.
This article mentions four of the most common problems when using contact cement:
Also, "When used on a porous or semi-porous material such as wood or plywood, a first 'priming' coat of contact adhesive may be needed to preseal the material. Otherwise, some areas may absorb too much adhesive to form a strong bond. This prime coat is followed by a second gluing coat. Following the label directions concerning drying times, application thickness, and using the proper tools."
TODO — what are the SOLUTIONS to those above "four common problems"? Unfortunately that document doesn't mention solutions much.