Hi all. I'm new to the forum and hoping to get some help with a problem we experienced today with our 06 Prius - 63k miles. Up to this point, the car has been completely trouble-free. Abruptly, there was an extremely strong, foul electric-like smell throughout the cabin. No sudden acceleration, not pulling any heavy loads, no out of the ordinary driving. The weather was in the low 60s today. No a/c or heat being used at the time. The smell persists or becomes even stronger after the car sits turned off for several hours. the battery vent was not blocked, but the smell does appear to be stronger at the vent. The smell is so strong that we can't tolerate sitting in the car. Has anyone heard of similar issues or have any ideas as to the potential cause? Thanks in advance for your consideration.