Westin's scent is called White Tea. You can purchase the air freshener system. It's expensive. 40 a month plus shipping and handling with 1 year commitment.

You can order it at http://www.westin-hotelsathome.com/

Cheaper alternatives include diffuser and potpourri. Don't buy the candles as they smell nothing like the rest.

The W uses seasonal scent but the standard one I think is called Wish. I have the candles. You can buy them here: http://www.whotelsthestore.com/item....=1070&cat_id=2

W also uses Aroma diffusers used to be available at wthestore.com, but no longer available. You can check www.blissworld.com

Here's the website for air aroma: http://www.air-aroma.com/Application-Client.aspx?id=48