Unclear what caused the strong odors.

Notice that your Advil pills are smellier than usual? Pfizer has recalled 650,000 bottles of Advil Ligui-Gels due to “strong odors” associated with the product.  The recall was issued to distribution centers (and not retail outlets) only.

Apparently, something in the manufacturing process  “may have caused a stronger odor in the product,” according to a notice posted by the FDA.  It is unclear whether the odor-affected Advil bottles have anything else wrong with them.