Bit of a stretch here, but could PASVORN OLETI be “inhale deeply”? It seems to be related to resolving the “burning lungs(?)” situation, and we have PASE=“in”, so PAS- might be “in-” as a prefix, and OLET being “deep” might make sense in the description of the GARST?
EDIT: We also have an OLT chamber and an OLT door, and OLT-SHRON documents. I think “high/tall” might work for these (“high-value documents”), and it would make sense for “deep” to be related.