The yellow residue doesn't smell.....it is the AMMONIA that smells
The yellow residue is dried up sodium chromate (rust inhibitor) and it is TOXIC
To clean it up use safety glasses, masks, gloves and vacuum it ---do NOT use air compressor to blow it out
Coolant solution is Ammonia, Hydrogen, Sodium Chromate and Water
(Some units have used Helium vs Hydrogen----very small percentage....Atwood HE and aftermarket replacements)
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31