There are thousands of products on open sale that could kill a child and they are not banned (that's not even mentioning guns!!). It's down to safety with regard to packaging and labeling. ALL liquids should be supplied in containers with child resistant closures and should be labeled accordingly, as they are by law in the UK - see CHIP regulations. 30ml of 36mg [
1 mg per litre = 1 microgram per ml ] eliquid contains 1080mg of nicotine, 18 times the lethal dose if it was imbibed by mouth. Now does that figure make you stop and think?!
Customs or FDA or whoever would probably not look kindly on bottles of "aromatherapy oil" that turned out to carry a toxic substance and rightly so. It is up to the manufacturer or supplier to ensure that this toxic substance is sent to the end user in an appropriate container as, in the eyes of the law, it is their responsibility (end users often being judged using the lowest common denominator - ie dumb). These are the types of regulation that will be enforced and which will have to be accepted to avoid a total ban. In the UK certain pesticides were withdrawn from sale because of the high nicotine content.
Alan.