Hi there i would leave your other rabbit in its cage for a few days and clean the other cage several times snuffles in highley contagious and take away all food bowls and water bowls out of there dont let your other bunny use it, snuffles can be brough on by stress and poor ventaltion and overcrowding houseing, so please be very carfull putting other rabbit in there untill totally clean hope this helps you x

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