Johnson & Johnson recalled bottles of its Tylenol pain reliever in 2010 because of a moldy odor that has been linked to consumer complaints of nausea and vomiting.

The recall affected 50-count bottles of Tylenol 8 Hour Caplets. Check the side of the bottle label for the lot number BCM155 and the UPC code 3 0045-0297-51 8.

In an interview, Marc Boston, a company spokesman, said that the lot of recalled Tylenol 8 Hour had been produced after the company had taken steps to eliminate a chemical called 2,4,6-tribromoanisole, or TBA, from its production process. Those steps included no longer using wooden pallets treated with TBA to transport its medications and a new “rigorous cleaning protocol.”

He said the company was still investigating how this new lot could have become tainted. Boston also said “no other lots containing TBA have been identified to date.”