(ET) Ahh! The Smell of Ozone

[Klein Robert W NPRI <KleinRW Npt NUWC Navy Mil>]

I recently got a snow cab for by C-185 (Thank you Roxbury, CT).  With 
yesterdays 6-12" dump of white fluffy stuff, I got a chance to enjoy my 
new room with a view.  What I noticed first was a slight ozone smell.  
Question:  should I be overly concerned?  I assume it's coming from the 
drive motor and wonder if this was a sign that I should be servicing the 
motor?

Thanks in advance,

Bob