Is this Ozonator good?

Hey guys. Right now i'm doing a stealth grow, and sometimes my parents stop by, so I don't want it to smell like bud.

Do you think this Ozonator will make the smell unnoticable?

http://cgi.ebay.com/Pro-Water-or-Oil-Ozonator-Highest-Ozone-Output-Ion-New_W0QQitemZ320450929761QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4a9c5d2461

thanks

bump please