What is THIS??!?!?! (PIREP)

[slushie]

Pirep 05:20z 04/13/09
mri ua /ov panc125020/tm 0520/fl090/tp b734/wv 08508kt/tb neg/rm vmc conditions / thin cloud layer / neg smell awc-webasa

 

[Nick]

I would guess that they can not smell any volcanic ash. I have never flown around a volcano eruption though so don't take my word for it!

Wildfire smoke did smell wonderful from the air, I thought.