Could you paste the HTML code you're using? If you're just typing each listing on its own line in the spreadsheet cell, I don't think that works. You can force a linebreak like so:
Code:
"AIR WICK" SCENTED OIL REFILL<br>
*Calming Magnolia and Cherry<br>
*Glass fragrance bottle with quick snap for easy installation<br>
*Depending on setting can will last for up to 60 days<br>
*Use Airwick warmer only (Sku no. 1338763)<br>
*Help creates the desired mood in any room, family room, bedroom and bathroom<br>
*Boxed