When Odysseus gets back to ithica, his old dog Argus is described raising his head to see his master one last time before lying down in death, very emotional but not gory or violent in any way
Sort of, Odysseus was drafted to war against his will leaving Penelope and Telemachus (his son) behind. He does return home though. So not technically abandoment.
It depends on your interpretation of the text. Hermes told odysseus to have sex with circe after proving he was immune to her magic and he is trapped on calypso's Island for 7 years whilst they have a sexual relationship. There are no explicit scenes though
Odysseus is tied up by his crew to endure the Sirens' song per Circe's instructions. His incapacitation is predetermined and consensual, but he does struggle and yell for them to untie him only to be tied up even more.