Which part is dangerous in circuit of transformerless power supply?

[saileshdewangan]

Which part of circuit is dangerous to touch. I know source part is dangerous. But I want to know that if output is 15v dc then Is it also dangerous to touch directly? Because when we use transformer for step down the voltage, we can touch it directly.

 

[godfreyl]

Every part of it is dangerous to touch, including the "low voltage" output.