A1;B1;C1
A2;XX;B2
YY;C2

$ ssconvert -O 'separator=;' example.ods example-2.txt
$ cat example-2.txt
A1;B1;C1
A2;XX;"B2
YY";C2

$ ssconvert -O 'separator=; quoting-mode=always' example.ods example-3.txt
$ cat example-3.txt
"A1";"B1";"C1"
"A2;XX";"B2
YY";"C2"