smoke out of A/C vents (??)

Hi everyone.
I'm seeing smoke/mist coming out of the A/C vents when I turn the A/C on or keep the vents open while driving and I'm quite worried!
It does have an anti-freeze king of smell. Any possible sign of coolant sipping into the A/C vent line? (never heard of this).
Please help. Thanks a billion!
fongo 
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1993 GT, MAC Fenderwell Cold Air Induction; Accel dist.,Splitfire plugs, BBK: 1 5/8 unequal length shorties, hi flow H-pipe w/ cats; Flowmasters 2 chamber American Thunder catback system, Motorsports 3-core radiator, 180º thermostat, BBK adj. clutch quad...the rest is bone stock!..but more mods to come!!
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