No emergency fund shouldn't be invested in bitcoin, because emergency fund has it own purpose and role to play when the needs arises, emergency fund are to be use only for emergencies and not to be invested in bitcoin, investing your emergency fund can endanger your bitcoin investment, if emergencies arise and there is no emergency fund to handle that emergency It may lead to selling off your bitcoin investment at early stage of accumulation which might likely land you in lost. Only invest in bitcoin with your discretionary income and any other money aside your discretionary income shouldn't be invested for they have there own purpose and there role to play when the need arises.