I use those and Ziplocs extra large storage bags. Never had trouble with a petroleum odor but I use baking soda packets also. I just make a small pouch with a paper towel like an envelope and place baking soda in it and place on top just incase you don't get all the air out. One thing to be sure of is to make sure none of the articles have been in a damp area. If so run through a low heat dryer. Will prevent any mold or mildew with slightest moisture.