Sleepers, Wake by Paul Samuel Jacobs Sleepers, Wake (An Apple Paperback) https://www.amazon.com/dp/0590423983/ref=cm_sw_r_cp_api_i_wQOTCb37CB06M
Sounds like Sleepers, Wake https://www.amazon.com/dp/0590423983/?tag=stackoverflow17-20
It's got space travel, a boy whose pod malfunctions, and it has spores in it on the planet they end up at.
Check the synopsis for "Sleepers, wake". Here is a link http://www.amazon.com/Sleepers-Wake-An-Apple-Paperback/dp/0590423983
The description there doesn't do good justice but I remember it had elements that you describe.