Odor under Bathroom Lavatory
I have been told the odor is coming from my lavatory sink in the bathroom. THis is a brand new home and the odor is not going away. Every time I open the cabinet under the bathroom sink, the odor is stifling. Sometimes I smell it just when I walk in the bathroom. The builder said it was because only the top of the lavatory is sealed and not underneath. Is this normal? Could my smell be coming from the actual lavatory they installed? Frustrated in the bathroom with the odor and not being able to put things up- don't want everything to start smelling. I have tried putting baking soda, newspaper, strong air fresheners and nothing is working. Any clues?? Or could this be something else?