As you tighten up your home’s envelope, make adjustments to keep indoor air clean [1] and healthy. Choose VOC-free finishes, floor coverings and project materials, and get a vacuum equipped with a powerful HEPA filter. Ensure that all vents are in working order so that moisture and odors can properly exhaust, and consider adding a whole-house air cleaner [2] to your existing HVAC system.
Links:
[1] http://www.moneypit.com/blog/tom-kraeutler/home-improvements-healthy-indoor-air-quality
[2] http://www.moneypit.com/question-and-answer/whole-house-air-cleaners-supplement-your-hvac-system-improved-indoor-air-quality