2 forgotten beast related accidents in the same week...*sigh
forgotten beast #1, giant tick with poisonous gas managed to get through my cave-in trap because i was busy monitoring the pitting of zombies and transferring of necromancers (which proved extremely fun this one time, since they wave at the corpses when passing the refuse pile).
I sent my military of 13 marksdwarves total to take care of it, and they managed to kill it fairly easily. the beast fell the the ground and could not advance into melee after being peppered with bolts, but hurled it's noxious gas at my army. Soon my army was crippled, even though they managed to kill it, most of them fell conscious with a fever and numbness in the right arm, quickly filling up my 1-bed hospital. My mayor was amongst them too, since he was also the militia commander (though he isnt the strongest fighter i have). 1 Whole week of dwarven labor from several dwarves wasted since they were awaiting diagnoses, but didnt have any apparent injuries at all.
forgotten beast #2, giant humanoid made of mud, coincidentally also having poisonous gas. This time i was ready, i was gonna monitor my cave-in trap until its dead. Everything went well except when i ordered my dwarves to pull the wall-in lever of the trap. Looking at the trap i saw that the outpost liason, for some stupid reason, decided to go into the trap's hallway. The forgotten beast fought with the liason and managed to rot his whole body with the syndrome, even knocking him unconscious, but the liason eventually managed to punch the beast to death when he finally came to. So now i have a miasma spewing, but still alive diplomat following my mayor around and spreading miasma everywhere.
oh and this one soldier is also miserable and close to tantrumming due to lack of trousers for his military uniform, so hes pantless. I quickly made some masterwork bone greaves and ordered my military to wear that (note: i already have full coverage of the legs with steel high boots and mail shirts, and greaves are quite heavy, so i use bone and leather armor for some parts of my marksdwarves squads' gear). The miasma spewing diplomat sent him over the edge, but he surprisingly calmed down instantly (presumably because i gave him the greaves a while ago, but hes still sad for some reason).