The âsniff a poisonâ challenge. Welcome to the âSniff a Poisonâ Challenge! Below is a list of odo(u)rs. For each different odour try to identify the poison(s) or toxin(s) that can give rise to it â then click on the odour (in blue) to show/hide the answer. If there are multiple answers, the number of answers listed is shown in brackets.
Tremors can also be caused by conditions or medicines that affect the nervous system, including Parkinson's disease, liver failure, alcoholism, mercury or arsenic poisoning, lithium, and certain antidepressants.
Cause of essential tremor. Essential tremor is the most common type of tremor, and affects more people than Parkinsonâs disease. Some estimates suggest that around one in five people over the age of 65 years is affected. There is no known cause, but a genetic link is strongly suspected.