As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE/LAV WARNING AT FL 300 TOD LEAD FA REPORTED A SLIGHT SMELL OF SMOKE BRIEFLY FROM 1ST CLASS LAV UNDER SINK. DISAPATED QUICKLY. NO EVIDENCE OF SMOKE OR RESIDUAL CHARRING, ETC. C/W NO-GO ODI PROCESS PER TSM 05-50. DETERMINED TO BE TYPE10 EVENT. DETERMINED TO BE PAX VAPING IN LAV. NO FURTHER DEFECTS NOTED. (LP: 6559916)