First step is to verify that there is a problem. A formaldehyde passive acs badge for $39 including lab analysis will tell you the concentration of formaldehyde. Simply slide the outer cover of the badge down exposing a series of small holes. Suspend in the center of the area being tested. 24-hours later slide the outer cover closed and mail. In a week you get the results.

There are many different recommendations on how much formaldehyde is acceptable. CA’s Office of Health Hazard Assements recommends 7 ppb. Studies show children have decreased lung function at 30 ppb and increased asthma at 60 ppb. Most adults negatively impacted at 100 ppb yet humans don’t smell formaldehyde until 500 ppb.

Depending on your concentration there are several thing you can consider:
1) Increase ventilation.
2) Keep the air cool and avoid sun contact as formaldehyde double with a 10 degree increase in temperature.
3) Apply a clear sealant each coat reduces formaldehyde in half. Three coats about 85% of the formaldehyde should be gone.
4) Remove the source. Difficult to remove a newly install laminate floor but what is your health worth?
5) Re-test to verify the level is acceptable.
6) Testing in the summer is also important. Turns out that much of the fiberglass insulation in the walls produces significantly more formaldehyde on hot summer days. Especially in rooms with an exterior wall that gets the afternoon sun. In hot sunny climates, 100 ppb from the wall insulation is unfortunately achievable.