Hi there, I laid some engineered wood flooring on concrete with Mapei Ultraplan M20 self-leveling compound over a week ago. The bags said zero VOC premixed. There was an awful sweet/fruity chemical smell when I mixed it. I called Mapei and they said it would go away when dry. However, the smell is still here. I would have thought the underlayment (AirGuard Roberts 3-in-1) would cut the smell but it's bad. I need to level plywood subfloors upstairs to finish this job and wondering if anyone can recommend an equivalent product that doesn't stink. And, can anyone tell me what this smell is and whether it's toxic to my family, babies crawling on the floor? Thanks so much!