Edited for excess quotes and relayed FWIW:
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From: "Pascal Fournier" <[log in to unmask]>
Subject: Re:      FW: Re: You know you are in a beekeeping family...........

As a laboratory technician, I note in the text from Murray Mc Gregor that he
was preparing mustard as a sideline.

Mustard seed is one of the very rare vegetable who deliver cosequent amount
of Carbon Disulphide. This product affect brain, liver and nerves. The fact
is that you can' t find a lot of studies on very low level chronic exposure,
the only studies made is about workers in industrial plant who have a lot of
contact with the product.

I know that anything who affect your liver decrease your allergic
resistance.

I include the adress of the datasheet of the product
http://www.jtbaker.com/msds/c0957.htm
http://www.atsdr.cdc.gov/tfacts82.html
http://www.lakes-environmental.com/toxic/CARBON_DISULFIDE.HTML

I know that a simple urine test can be made on people.
the problem with light chronic intoxication is that usually under a certain
amount, no medical studies are made.

Happy New Year everybody.

                                P.Fournier