Uy mama, I'd honestly check with your OB about this one kasi pregnancy can make you extra sensitive to strong chemical smells, at ang Tuff is pretty potent talaga! A few of us pregnant moms try to avoid heavy-duty cleaners during pregnancy if we can, kaya siguro pwede i-ask your hubby to use milder options or mag-open ng windows well after cleaning? The smell should dissipate quickly once the CR door is closed and you're away from it, but better safe than sorry with baby on board na!