The ones I have are completely odourless. I am unaware of any health risks. I haven't meant to cause offence to anyone, nor tried to be insensitive, or arrogant. I am rather surprised at the strength of the reactions I have received; from the guy in the meeting, to some of the responses here.
But it's important to me that I understand what I have done wrong, and try to see it from other people's points of view.