"Original sin and Romans 5: 19. Romans 5:19 Ezekiel 18:9
It is explained that Ezekiel 18 cannot mean what he says because of Roman 5:19. Indeed, Romans 5:19 is the proof verse for original sin. It reads, "For as by one man's disobedience many were made sinners.." Hence, the view that you and I are sinners because we have inherited the sin of Adam. Notice the remainder of the verse: ".so by the obedience of one shall many be made righteous." Intelligent reader, if part A of the verse is teaching the universal and arbitrary transmission of the original sin (directly condemned because of Adam), then part B is teaching universal and arbitrary salvation (directly saved because of what Christ did, without any personal participation on our part). Think about it....." 19For as by one man’s disobedience many were made sinners, so also by one Man’s obedience many will be made righteous. (NKJV). 20“The soul who sins shall die. The son shall not bear the guilt of the father, nor the father bear the guilt of the son. The righteousness of the righteous shall be upon himself, and the wickedness of the wicked shall be upon himself. (NKJV).
Extracted form "The Truth about Original Sin" 
http://www.bibletruths.net
by Don Martin