I have the 200plus and can't smell it either. I used to use Sanders, but it completely deteriorated in last 15 years, that one I could smell for sure.
So now I just go by ORP and that goes up every time I turn it on.
Works for me.
BTW I don't bother with the air dryer.
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Denis
150g SPS reef;3x250WHQI,Tunze Streams,Wavebox,Neptune Apex,fishroom in basement  ,reefing since 93,SPS since 99.
TOTM June 2010
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