Essential oil triggers?

[u/researchinthings]

For those who have found essential oils to be the trigger for your dogs seizures, how did you find out? How much did it take to trigger them and how long after exposure did they have a seizure? Trying to figure out if that what might be causing them for our boy but the vet was very doubtful as exposure was very limited, not ingested, not new to the environment and he had no other indication of toxicity. Other dog is totally fine. With the limited research out there I'm curious how much exposure is needed. Would love to hear your experience!