It may have been just the unfamiliar smell stressing him. But I did find this bit of information, but since the plant was that far away, it may or may not have had anything to do with it.
Home Forcing of Hyacinths
Revised 6/99 -- Author Reviewed 6/99 HIL-8507
Gwendolyn H. Pemberton, former Graduate Research Assistant
A. A. De Hertogh, Professor
Department of Horticultural Science
...NOTE OF CAUTION: Hyacinths contain oxalic acid which can produce an irritation of the skin. Thus, before planting hyacinths, it is advised to thoroughly wet the bulbs, in order to reduce the potential of skin itch. Also, wear gloves for protection.