I am also going to go with Ebola or Marburg virus. Those are the worst ways to die i guess. At least the ants eat you in minutes. Marburg starts with a headache the next few days your face starts getting yellowish and your throat starts to burn and you feel just bad. Then nausea sets and after 3 days your face looks yellow with red spots. You are in pain and vomiting at that point you will start to get worried. As the naussea remains. You will probably have had 2 docter visits where in the first he said you had a cold and in the second you had a stomach flue or if the face is looking very yellowish he might already have started blood testing for a virus that is taking on the liver without knowing what doom is upon you.
After another 2 days of throwing up with combination of sore throat and muscle aches and random dizziness you might start to feel sharp pains in your mild and liver. Your diarehea that started right after vomiting is starting to have blood and you start to pee blood if you don't start vomiting blood first, nausea comes and goes in bouts and you start throwing up black blood and probably pass out as you await the ER while throwing up. When you awake in pain in a hospital bed weakened possibly still in pain you see all kinds of equipment and you lay in a tent in a hospital a nurse or doctor comes to tell you the news that you have hemorragique fever and that the pain in your milt is because it is swollen up like the size of a basket and that all your organs are melting away. If you have very much luck the reason why they don't kill you. You might be the five in a hundred that recovers else you will soon be in another plastic bag. You start to feel worse despite pain meds and people come and see at you from behind a window and slowly you know that you are passing out.Maybe you find that other people have also gotten the disease from those who you know. You will be burned non the less and all your remainings will be destroyed. Probably death is within 10 - 18 days after showing the first symptoms (the headache or sore troat).
The minute people found out you where sick you changed in a biohazard danger and a number. And something is slowly eating you up and making you feel so bad.
Ebola is about the same 90% of the people dies within a couple of weeks. The rest recovers with good care.
If i found out i had marburg but wasn't sick yet i would have a good bye to all my friends and then do an original big time suicide. No point in trying for me. Modern science still has no medicine whatsoever for those Biolevel 4 hazards.
The only worse thing would be a biolevel 4 hazard that goes airborn or a big nuclear explosion that you know everyone you know might die as well.
Not saying i want to die by other animals either:
Besides the usual ants there are other painfull deaths.
- brasilian wandering spider, sydney funel web spider
- copperhead snakes,cobra, black mamba, eastern brown snake, saw scaled viper,boomslang (green)....
- death stalker scorpion (one of the most painful toxins on the nervous system)
- the golden frog is one of the most painful killers if you ever had to step on one.
- don't forget hippo's don't want to make them angry they'll bite you in two like it's nothing