Payment for goods and services through cash can transmit Corona virus, doing transactions through bank, especially cash deposits can also transmit the virus. The safest way that we can create values and pay for goods and services during this time still remain blockchain and those selling off at this moment are doing so because they did not spend time to study the Blockchain technology and how it works.
Studying the technology doesn't mean that they will use Bitcoin already although transaction thru online is the most advisable way right now to send and receive money in different places.
Even though there are threat that cash can transmit the Virus, people have no choice because that is the most use and most accepted kind of payment now in different establishments. What they must do is that after holding some cash, they must wash their hands with soap and water or alcohol immediately so that the virus will not last longer in their hands.
Bitcoin should be bullish right now but unfortunately it doesn't. Its because the economy right now is heavily battered by the news and Bitcoin's price is still based on fiat currencies like USD, PHP etc. and since markets are down right now then so it crypto market too. After this pandemic, markets will start to recover and make a reversal but it will take months before it happens.