5131
Sodium hydroxide has been used for detection of carbon monoxide poisoning , with blood samples of such patients turning to a vermilion color upon the addition of a few drops of sodium hydroxide .
 disease: carbon monoxide poisoning
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 disease: carbon monoxide poisoning