4665
Phasic pain was applied by means of short pulses of CO2 to the nasal mucosa ( stimulus duration 500 ms , interval approximately 60 s ) , and tonic pain was induced in the nasal cavity by means of dry air of controlled temperature , humidity and flow rate ( 22 degrees C , 0 % relative humidity , 145 ml . s - 1 ) .
 Disease: pain; Chemical: CO2; Disease: pain
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: pain; Chemical: CO2; Disease: pain