That's a very good question. The answer is unknown.
Modern paints have low toxicity, but all have some toxicity.
In the case of polyurethane paint and some floor coverings you can probably cause brain damage. These are the bad news bears.
Read the labels mon the paints.
In the case of flat water based wall paints the danger is not significant if the room is well ventilated with an exhaust fan and the baby is kept out of the room for the first 12 hours or so.
Prudence would dictate the use of water-based paints, keeping the windows open and using fans.
One thing to do is to make a "positive pressure" room for the baby. The pressure in the room is kept higher by a fan pumping air from the outside in while in the painted areas fans blow toe air to the outside.
The best thing to do would be to keep the baby in another house during the painting.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.