As part of a kitchen remodel a plumber installed new pvc connections to the new sink. There has been a strong odor coming from under the sink for about a month now. I emptied the cabinet and left the door open for three days and the odor dissipated. When I closed the door the odor came back strong almost immediately. The work was done over a month ago. I stuck my head under the sink and smelled the pvc connection and this is where the odor is originating from. Is this a health issue for me and my family???